[dm-devel] [dm:for-next 5/8] drivers/md/persistent-data/dm-btree.c:702:5: warning: no previous prototype for function 'shadow_child'

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm.git for-next
head:   68040817337fda98196974401391f2d1b9f87e49
commit: d69e2e7e28bd1d13ad2ac1f2e9ea6184567d1587 [5/8] dm btree: improve btree residency
config: x86_64-randconfig-a013-20210520 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project bf9ef3efaa99c02e7bfc4c57207301b8de39a278)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install x86_64 cross compiling tool for clang build
        # apt-get install binutils-x86-64-linux-gnu
        # https://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm.git/commit/?id=d69e2e7e28bd1d13ad2ac1f2e9ea6184567d1587
        git remote add dm https://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm.git
        git fetch --no-tags dm for-next
        git checkout d69e2e7e28bd1d13ad2ac1f2e9ea6184567d1587
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp at intel.com>

All warnings (new ones prefixed by >>):

>> drivers/md/persistent-data/dm-btree.c:702:5: warning: no previous prototype for function 'shadow_child' [-Wmissing-prototypes]
   int shadow_child(struct dm_btree_info *info, struct dm_btree_value_type *vt,
       ^
   drivers/md/persistent-data/dm-btree.c:702:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   int shadow_child(struct dm_btree_info *info, struct dm_btree_value_type *vt,
   ^
   static 
   1 warning generated.


vim +/shadow_child +702 drivers/md/persistent-data/dm-btree.c

   696	
   697	/*
   698	 * We often need to modify a sibling node.  This function shadows a particular
   699	 * child of the given parent node.  Making sure to update the parent to point
   700	 * to the new shadow.
   701	 */
 > 702	int shadow_child(struct dm_btree_info *info, struct dm_btree_value_type *vt,
   703			 struct btree_node *parent, unsigned index, struct dm_block **result)
   704	{
   705		int r, inc;
   706		dm_block_t root;
   707		struct btree_node *node;
   708	
   709		root = value64(parent, index);
   710	
   711		r = dm_tm_shadow_block(info->tm, root, &btree_node_validator,
   712				       result, &inc);
   713		if (r)
   714			return r;
   715	
   716		node = dm_block_data(*result);
   717	
   718		if (inc)
   719			inc_children(info->tm, node, vt);
   720	
   721		*((__le64 *) value_ptr(parent, index)) =
   722			cpu_to_le64(dm_block_location(*result));
   723	
   724		return 0;
   725	}
   726	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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